<template>
  <div class="home">
    <!--1.  顶部区域布局---------- -->
    <div class="header">
      <div class="item">
        总销售额
        <div class='num'>{{ num(homeInfo.saleTotal) }}</div>
        <div class="bottom">今日销售额：{{ num(homeInfo.sale) }}</div>
      </div>
      <div class="item">访问量
        <div class='num'>{{ num(homeInfo.viewsTotal) }}</div>
        <div class="bottom">今日访问量：{{ num(homeInfo.views) }}</div>
      </div>
      <div class="item">访问量
        <div class='num'>{{ num(homeInfo.collectTotal) }}</div>
        <div class="bottom">今日销售额：{{ num(homeInfo.collect) }}</div>
      </div>
      <div class="item">支付量
        <div class='num'>{{ num(homeInfo.payTotal) }}</div>
        <div class="bottom">今日支付量：{{ num(homeInfo.pay) }}</div>
      </div>
    </div>

    <!--2. 访问数据统计 ----------------->
    <div class="content">
      <div class="time-info border" id='box13'>
        <div class="title">月销售额</div>
        <div id="charts" style="width: 100%; height: 300px"></div>
      </div>
      <div class="area border" id="box1">比例分配
        <div id="main" style="width: 100%; height: 300px"></div>
      </div>
    </div>


    <!-- 3.  -->
    <!-- 最新内容 -->
    <div class="home-footer">
      <el-card class="box-card">
        <template #header>
          <div class="card-header">
            <span>今日订单</span>
          </div>
        </template>
        <div class="text item">
          <el-row>
            <el-col :span="8">
              <div>111</div>
            </el-col>
            <el-col :span="8">
              <div>222</div>
            </el-col>
            <el-col :span="8">
              <div>333</div>
            </el-col>
          </el-row>
        </div>
      </el-card>
      <el-card class="box-card">
        <template #header>
          <div class="card-header">
            <span>本月订单</span>
          </div>
        </template>
        <div class="text item">
          <el-row>
            <el-col :span="8">
              <div>111</div>
            </el-col>
            <el-col :span="8">
              <div>222</div>
            </el-col>
            <el-col :span="8">
              <div>333</div>
            </el-col>
          </el-row>
        </div>
      </el-card>
      <el-card class="box-card">
        <template #header>
          <div class="card-header">
            <span>快捷入口</span>
          </div>
        </template>
        <div class="text item">
          <el-button type="primary">产品管理</el-button>
          <el-button>消息管理</el-button>
          <el-button>内容管理</el-button>
        </div>
      </el-card>
    </div>

  </div>
</template>

<script>
import api from '@/api/index'
import { computed, onMounted, reactive, ref, toRef, getCurrentInstance, inject, nextTick } from 'vue'
import { num } from '@/utils/utils'
export default {
  setup() {
    //定义统计数据变量-对象 
    // let homeInfo = reactive({ data: {} })
    const homeInfo = ref({})

    //1.获取echarts
    const instance = getCurrentInstance();
    const echarts = instance.appContext.config.globalProperties.$echarts
    //2.获取echarts 
    const $echarts = inject('echarts')

    //1. 获取首页统计信息数据-------------------------------
    api.getHomeCount().then(res => {
      console.log('获取首页统计信息数据', res.data.data.list);
      //语法：Object.assign(目标对象,要合并的对象)
      //1.响应式
      // Object.assign(homeInfo,res.data.data.list)
      //2. 响应式
      // let data = res.data.data.list
      // homeInfo.data = data
      //3. 响应式数据
      homeInfo.value = res.data.data.list
    })

    //2. 首页图表数据-----------------------------------
    api.getHomeFormat().then(res => {
      console.log('-获取绘制折线图--------', res.data.result.data.sale_money);
      let arr = res.data.result.data.sale_money;
      //声明变量存储x轴 y轴数据
      let xData = [], yData = [], yBarData = [], pieData = [];
      arr.forEach(ele => {
        xData.push(ele.name)
        yData.push(ele.total_amount)
        yBarData.push(ele.num)
        //获取对象结构存储饼图数据-----
        let obj = {}
        obj.name = ele.name;
        obj.value = ele.total_amount;
        pieData.push(obj)
      });
      //绘制折线图---动态数据---------------
      bar(xData, yData, yBarData);
      //绘制饼图--动态数据-------[{name:'',value:''},{}]----
      pie(pieData)
    })

    //绘制柱状图
    const bar = (xData, yData, yBarData) => {
      console.log('--绘制柱状图-----------', $echarts, xData, yData);
      //解决一个charts不渲染的问题 认为dom没有修改
      let dsiab_com = document.getElementById("charts")
      dsiab_com.removeAttribute('_echarts_instance_')
      var myChart = $echarts.init(dsiab_com);
      // 指定图表的配置项和数据
      var option = {
        tooltip: {},
        xAxis: {
          data: xData
        },
        yAxis: {},
        series: [
          {
            name: '销售额',
            type: 'line',
            data: yData,
            smooth: true
          },
          {
            name: '销售量',
            type: 'bar',
            data: yBarData
          }
        ]
      };

      // 使用刚指定的配置项和数据显示图表。
      myChart.setOption(option);
    }
    //绘制饼图
    const pie = (data) => {
      let dsiab_com = document.getElementById("main")
      dsiab_com.removeAttribute('_echarts_instance_')
      var myChart = echarts.init(dsiab_com);
      var option;

      option = {
        title: {
          text: 'Referer of a Website',
          subtext: 'Fake Data',
          left: 'center'
        },
        tooltip: {
          trigger: 'item'
        },
        legend: {
          orient: 'vertical',
          left: 'left'
        },
        series: [
          {
            name: 'Access From',
            type: 'pie',
            radius: '50%',
            data,
            emphasis: {
              itemStyle: {
                shadowBlur: 10,
                shadowOffsetX: 0,
                shadowColor: 'rgba(0, 0, 0, 0.5)'
              }
            }
          }
        ]
      };

      option && myChart.setOption(option);
    }

    //绘制图标
    // onMounted(() => {
    //   //柱状图---
    //   bar()
    //   //饼图
    //   pie()
    // })

    return {
      // homeInfo: toRef(homeInfo, 'data'),
      num,
      homeInfo
    }
  }
}
</script>

<style lang="less" scoped>
.home {
  margin: 10px;
}

.header {
  display: flex;
  padding-right: 30px;

  .item {
    flex: 1;
    height: 100px;
    padding: 10px;
    background: #fff;
    border-radius: 10px;
    margin-left: 20px;
    margin-right: 20px;
    font-weight: bold;
    color: #fff;
    // text-align: center;
    position: relative;

    .num {
      font-size: 22px;
      margin: 10px;
      color: #fff;
    }

    .bottom {
      position: absolute;
      border-top: 1px solid rgb(246, 245, 245);
      padding: 10px 20px;
      bottom: 0;
      right: 0;
      left: 0;
      color: #fff;
      font-weight: normal;
    }
  }

  .item:nth-child(1) {
    background-image: linear-gradient(#df887d, #88554d);
  }

  .item:nth-child(2) {
    background-image: linear-gradient(#409eff, #2e556e);
  }

  .item:nth-child(3) {
    background-image: linear-gradient(#b54fa8, #713c7a);
  }

  .item:nth-child(4) {
    background-image: linear-gradient(#1cd2f1, #39717a);
  }
}

// 图表
.border {
  border: 1px solid #eee;
  background: #eee;
}

.content {
  margin: 20px;
  display: flex;
  height: 320px;

  .time-info {
    flex: 2;
    background: #fff;
    margin-right: 20px;
    padding: 10px;
  }

  .area {
    flex: 1;
    background: #fff;
    padding: 10px;
  }
}

//内容

.home-footer {
  display: flex;
  padding-left: 20px;
  margin-bottom: 20px;

  .box-card {
    flex: 1;
    margin-right: 30px;

    span {
      font-weight: 600;
    }
  }
}
</style>